Factory Bov

[stormtrooper]

Hi guys,

I am the proud owner of an R32 GTR skyline, it was tuned about 2 years ago and ran up 360awhp on the dyno.

Since I took ownership of it in May this year I have noticed that when it comes on boost it's not as sudden and hard as when I first bought it. I have checked and replaced spark plugs, coilpacks, checked and cleaned out the AFM's (Z32's) with degreaser and electrical contact cleaner, checked for vacuum leaks (found none) and have checked and double checked the intercooler piping colars and clams numerous times. The AAC was recently serviced and no worries there.

When she gets to operating temp, in my case about 80c, it starts hunting at idle. Say I pull up at lights, idles for a few seconds fine, then starts hunting. It only takes about 10 secs worth of hunting and it'll stall. I've found to combat this when it starts hunting I just give the throttle a little stab and it settles itself. Interesting. Appears to only really happen if turbo's have spooled between when I last took off and when I have now stopped.

I am wondering if this could be caused by a leaky bov? Being that also when I have boosted, come off boost and then go to boost again (say if heading into a corner, then out again) it takes a little while longer to spool the 2nd time round.

I am planning on getting a retune done sometime in the beginning of the new year aswel, because she's running fairly rich. Any suggestions or would getting it retuned reveal any of these issues anyway?

Cheers,

-Chris

PS: one thing I did notice aswel is that around the same time as this started happening, she doesn't hit full 1.2 bar (16psi) at the moment either.

Car has:

700cc injectors

Power FC

HKS GT-SS's

z32 AFM's

tomie front and dumps

ARC intercooler

still factory BOV's

Just some of the running gear

Edited November 23, 2009 by stormtrooper

[and3_3]

Do the BOV's sound the same from when you first got the car?

You could take them off and check them for damage.

Could always upgrade too.

[stormtrooper]

Do the BOV's sound the same from when you first got the car?

You could take them off and check them for damage.

Could always upgrade too.

Cheers for the response mate. Actually now that you mention it, it does sound a little weaker/muted then it did when I first got it.

Might have to take em off sometime.

[geraus]

Hmm, whats holding your boost? are you using an EBC? , Have you checked your plumb back recurc pipes? try checking them?

[stormtrooper]

I have a Blitz dual SBC, will do